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Is it possible to Pivot data using LINQ?
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I tested it, and it sort of works. Though SQL Profiler shows that EF will not translated it into a (fast) pivot query but a couple of slower sub queries.
– Rob Vermeulen
Mar 6 at 10:31
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Getting a slice of keys from a map
...ly won't make much of a difference, but it's not much more work, and in my tests (using a map with 1,000,000 random int64 keys and then generating the array of keys ten times with each method), it was about 20% faster to assign members of the array directly than to use append.
Although setting the ...
How JavaScript closures are garbage collected
...le above the GC has no way of knowing if the variable is used or not (code tested and works in Chrome30, FF25, Opera 12 and IE10).
The memory is released if the reference to the object is broken by assigning another value to window.f_.
In my opinion this isn't a bug.
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Difference between Array and List in scala
... a List[Int] (which will box its contents, unless you are using the very latest versions of Scala which have the new @specialized feature).
However, I think that the use of Arrays in Scala should be kept to a minimum because it feels like you really need to know what is going on under the hood to d...
How to update only one field using Entity Framework?
...method
In this case, it's up to EF how to handle this in detail. I just tested this, and in the case I only change a single field of an object, what EF creates is pretty much what you'd create manually, too - something like:
`UPDATE dbo.Users SET Password = @Password WHERE UserId = @UserId`
So...
Best practices for in-app database migration for Sqlite
...tring stringWithFormat:@"PRAGMA user_version = %d", DatabaseSchemaVersionLatest] UTF8String], NULL, NULL, NULL);
}
Here's [self database] method that lazily opens the database:
- (FMDatabase *)database {
if (!_databaseOpen) {
_databaseOpen = YES;
NSString *documentsDir = [NSS...
How to use multiple AWS Accounts from the command line?
...re region - here is list of region "codes" - docs.aws.amazon.com/general/latest/gr/rande.html
– arcseldon
Nov 5 '16 at 9:49
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tomcat - CATALINA_BASE and CATALINA_HOME variables
...sion upgrade needs be, only 1 installation changes required, or need to be tested/verified/signed-off.
Separation of concern (Single responsibility)
Tomcat runtime is standard and does not change during every release process. i.e. Tomcat binaries
Release process may add more stuff as webapplicati...
What is the current state of the art in HTML canvas JavaScript libraries and frameworks? [closed]
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@musicfreak Yes, ExplorerCanvas. Btw, it passes all ~900 tests in IE9 (4th preview), using its native canvas support.
– kangax
Aug 14 '10 at 5:30
4
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How to solve “Plugin execution not covered by lifecycle configuration” for Spring Data Maven Builds
... <goals>
<goal>test-compile</goal>
<goal>compile</goal>
</goals>
</pluginExecutionFilter>
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